Regular Expressions 101

^start of string

Group 1([A-Za-z ][0-9](\\([A-Za-z]+\\))(\\([0-9]+\\))([@|\\-|'|/| |.| |]|&|#|@ |(|) )*)

Character Class[A-Za-z ]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 2(\\([A-Za-z]+\\))

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 3([A-Za-z]+\\)

Character Class[A-Za-z]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 4(\\([0-9]+\\))

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 5([0-9]+\\)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 6([@|\\-|'|/| |.| |]|&|#|@ |(|) )*

*repeats the group contents below any number of times:

1st Alternative[@|\\-|'|/| |.| |]

Character Class[@|\\-|'|/| |.| |]

@the literal @ (64₁₀ / 100₈ / 40₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\\-|one character from \ (92₁₀) to | (124₁₀)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative&

&the literal & (38₁₀ / 46₈ / 26₁₆)

3rd Alternative#

#the literal # (35₁₀ / 43₈ / 23₁₆)

4th Alternative@

@ the literal text @

5th Alternative(|)

Group 7(|) — always finds a zero-length match

the literal (32₁₀ / 40₈ / 20₁₆)

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Search reference

Regular Expression

^([A-Za-z ][0-9](\\([A-Za-z]+\\))(\\([0-9]+\\))([@|\\-|'|/| |.| |]|&|#|@ |(|) )*)

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